US7889754B2 - Address resolution mechanism for ethernet maintenance endpoints - Google Patents
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- US7889754B2 US7889754B2 US11/179,993 US17999305A US7889754B2 US 7889754 B2 US7889754 B2 US 7889754B2 US 17999305 A US17999305 A US 17999305A US 7889754 B2 US7889754 B2 US 7889754B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2858—Access network architectures
- H04L12/2859—Point-to-point connection between the data network and the subscribers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2858—Access network architectures
- H04L12/2861—Point-to-multipoint connection from the data network to the subscribers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2869—Operational details of access network equipments
- H04L12/2878—Access multiplexer, e.g. DSLAM
- H04L12/2879—Access multiplexer, e.g. DSLAM characterised by the network type on the uplink side, i.e. towards the service provider network
- H04L12/2881—IP/Ethernet DSLAM
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
Definitions
- the present invention relates generally to data communications systems; more specifically, to service provider (SP) networks with Ethernet access domains that support Operations and Management (OAM) functions.
- SP service provider
- OAM Operations and Management
- DSL Digital Subscriber Line
- SP service provider
- DSLAM Digital Subscriber Line Access Multiplexer
- WAN wide area network
- IP Internet Protocol
- ACLs IP Access Control Lists
- Asynchronous Transfer Mode (ATM) protocol networks have traditionally been utilized for communications between DSLAM devices and Broadband Remote Access Servers (BRAS) that provide authentication and subscriber management functions.
- a BRAS is a device that terminates remote users at the corporate or Internet users at the Internet service provider (ISP) network, and commonly provides firewall, authentication, and routing services for remote users.
- Next generation BRAS devices are frequently referred to as Broadband Network Gateway (BBNG) devices.
- BBNG Broadband Network Gateway
- the ATM protocol is an international standard in which multiple service types (such as voice, video, or data) are conveyed in fixed-length “cells” over point-to-point network connections.
- VPI/VCI Virtual Path Identifier/Virtual Channel Identifier
- the VPI/VCI identifiers are used by the ATM switches to switch/direct the subscriber traffic to a given feature server, and in the reverse direction to forward server traffic to a given DSLAM/subscriber, without ambiguity.
- the VPI/VCI mechanism is used by the feature server to identify the subscriber.
- U.S. Pat. No. 6,801,533 for example, teaches a system and method for proxy signaling in a DSLAM and generally describes a DSL network that includes communication transfer of signals from a DSLAM to a remote access server over a high-speed ATM network. Transmission of packet data over an ATM network is also taught in U.S. Pat. No. 6,785,232.
- U.S. Pat. No. 5,818,842 teaches a communication system with an interface device that connects a plurality of interconnected ATM switches to Local Area Network (LAN) interface adapters for connection to LAN networks.
- LAN Local Area Network
- Ethernet is a technology that originated based on the idea of peers on a network sending messages in what was essentially a common wire or channel. Each peer has a globally unique key, known as the Media Access Control (MAC) address to ensure that all systems in an Ethernet have distinct addresses.
- MAC Media Access Control
- Most modern Ethernet installations use Ethernet switches (i.e., “bridges”) to implement an Ethernet “cloud” or “island” that provides connectivity to the attached devices.
- the switch functions as an intelligent data traffic forwarder in which data packet frames are sent to ports where the destination device is attached. Examples of network switches for use in Ethernet network environments are found in U.S. Pat. Nos. 6,850,542, 6,813,268 and 6,850,521.
- Service OAM provides monitoring and troubleshooting of end-to-end Ethernet service instances
- Link OAM allows a service provider to monitor and troubleshoot an individual Ethernet link.
- CFM connectivity fault management
- the 802.1ag standard basically allows service providers to manage each customer service instance, or Ethernet Virtual Connection (EVC), individually. Since Service OAM typically operates on a per-EVC basis irrespective of the underlying transport mechanism, 802.1ag essentially enables the SP to determine if an EVC has failed.
- Ethernet CFM as defined in 802.1ag, relies on a functional model consisting of hierarchical maintenance or administrative domains that are defined by provisioning which switch/router ports are interior to the particular domain.
- maintenance end points MEPs
- MIPs maintenance intermediate points
- FIG. 1 is an example of an Ethernet OAM network topology that illustrates a hierarchy of domains that includes customer, provider, operator, and Multi-protocol Label Switching (MPLS) domains, which correspond to Levels 0, 3, 5, and 7, respectively, in the proposed IEEE 802.1ag specification.
- MPLS Multi-protocol Label Switching
- the SP network includes an IP/MPLS core connected with a pair of Ethernet access domains via network-facing provider edge (n-PE) devices.
- n-PE network-facing provider edge
- Each access domain has a user-facing provider edge (u-PE) device providing a link with a customer edge (CE) device, which is commonly referred to as a residential gateway (RG) device.
- u-PE user-facing provider edge
- CE customer edge
- RG residential gateway
- the MEPs for each domain are illustrated by a cross-hatched box under the corresponding network device, with the MIPs being shown as open boxes in the connection path.
- Ethernet CFM as defined in 802.1ag is that it presumes that every node in the network (CE-to-CE in FIG. 1 ) supports the full set of functionalities defined in that specification.
- One of these presumptions, for instance, is that every node has a MAC address.
- the problem, however, is that for broadband access the service terminating node at the customer premises equipment (CPE) typically does not have a MAC address or the ability to run the full protocol suite defined in the 802.1ag standard.
- the first-mile connection to the customer demarcation operates in accordance with a legacy link OAM scheme such as ATM OAM, or in compliance with the IEEE 802.3 (Clause 57) standard (formerly known as 802.3ah), which do not fully support 802.1ag functionality.
- a legacy link OAM scheme such as ATM OAM
- IEEE 802.3 (Clause 57) standard (formerly known as 802.3ah)
- 802.3ah the IEEE 802.3 (Clause 57) standard
- 802.3ah IEEE 802.3ah
- the ATM-only architecture of the past has evolved to the point where the DSLAM is now typically connected via ATM to the CPE and via Ethernet to the BBNG. This makes it very difficult, if not impossible, for a SP network administrator or operator to check the physical connection path that data packets take between the RG and the BBNG nodes in response to, say, a service complaint received from a subscriber with an ATM connection to a DSLAM device.
- a network operator In a DSL environment, a network operator typically responds to a service complaint by executing an OAM procedure to a MEP on the DSL line based on a database that contains a mapping of a customer-id to DSLAM-name-and-port-id alongside an ATM VPI/VCI mapping for that port-id.
- each MEP is addressed by a unique MAC address (per Virtual Local Area Network (VLAN)), its Maintenance Association (MA), and a maintenance endpoint identifier “MEP-ID”.
- VLAN Virtual Local Area Network
- MA Maintenance Association
- MEP-ID maintenance endpoint identifier
- U.S. Patent Publication No. 2005/0099951 teaches a method of detecting a fault on an Ethernet network using OAM connectivity check functions in which connectivity check frames are generated and sent to either a specific unicast destination address or a multicast destination address.
- United States Patent Publication No. 2005/0099949 describes a further method that defines OAM domains by defining reference points on the Ethernet network, and using the reference points to insert and extract Ethernet OAM frames.
- a system for interworking between a broadband system such as an ATM system and a GR-303 format system for telecommunication calls is disclosed in U.S. Pat. No. 6,667,982.
- FIG. 1 is a diagram showing various OAM domains for a standard network topology.
- FIG. 2 is a conceptual model of a network with virtual MEPs in accordance with one embodiment of the present invention.
- FIG. 3 is a flow chart diagram showing a method of operation in accordance with one embodiment of the present invention.
- FIG. 4 is a generalized circuit schematic block diagram of a network node.
- FIG. 5 is a FIG. 5 is a flow chart diagram of the operations of a network node in accordance with one embodiment of the present invention.
- a multicast-based mechanism for resolving the address of a user-line MEP i.e., its MAC address and MEP-ID
- MEP-ID multicast address and MEP-ID
- a computer network is a geographically distributed collection of interconnected subnetworks for transporting data between nodes, such as intermediate nodes and end nodes.
- a local area network is an example of such a subnetwork; a plurality of LANs may be further interconnected by an intermediate network node, such as a router, bridge, or switch, to extend the effective “size” of the computer network and increase the number of communicating nodes.
- Examples of the end nodes may include servers and personal computers.
- the nodes typically communicate by exchanging discrete frames or packets of data according to predefined protocols.
- a protocol consists of a set of rules defining how the nodes interact with each other.
- each node 50 typically comprises a number of basic subsystems including a processor subsystem 51 , a main memory 52 and an input/output (I/O) subsystem 55 .
- Data is transferred between main memory (“system memory”) 52 and processor subsystem 51 over a memory bus 53 , and between the processor 51 and I/O subsystems 55 over a system bus 56 .
- system bus may include the conventional lightning data transport (or hyper transport) bus and the conventional peripheral component [computer] interconnect (PCI) bus.
- Node 50 may also comprise other hardware units/modules 54 coupled to system bus 56 for performing additional functions.
- Processor subsystem 51 may comprise one or more processors and a controller device that incorporates a set of functions including a system memory controller, support for one or more system buses and direct memory access (DMA) engines.
- the single-chip device is designed for general-purpose use and is not heavily optimized for networking applications.
- packets are received from a framer, such as an Ethernet media access control (MAC) controller, of the I/O subsystem attached to the system bus.
- a DMA engine in the MAC controller is provided a list of addresses (e.g., in the form of a descriptor ring in a system memory) for buffers it may access in the system memory.
- the DMA engine obtains ownership of (“masters”) the system bus to access a next descriptor ring to obtain a next buffer address in the system memory at which it may, e.g., store (“write”) data contained in the packet.
- the DMA engine may need to issue many write operations over the system bus to transfer all of the packet data.
- a conceptual model that includes a so-called “virtual Maintenance Endpoint (vMEP)” which emulates a MEP, as defined in the IEEE 802.1ag specification, is implemented on a broadband access node.
- vMEPs virtual Maintenance Endpoint
- a broadband access node may check the integrity of the subscriber line by issuing a legacy OAM loopback message (e.g., ATM or 802.3ah loopback), and then signal the response state within the Ethernet access network using 802.1ag continuity check messages (CCMs).
- CCMs continuity check messages
- CPE Customer Premises Equipment
- FIG. 2 is a conceptual diagram showing a broadband access/aggregation network with vMEPs.
- vMEPs the example of FIG. 2 includes vMEPs, it should be understood that the MEP address resolution mechanism does not rely on the existence of a vMEP; that is, the invented MEP address resolution mechanism is applicable to any OAM.
- the diagram of FIG. 2 illustrates an Ethernet access network that includes a BBNG device 25 (e.g., a router) that terminates bridged sessions, e.g., point-to-point over Ethernet (PPPoE) or Internet protocol over Ethernet (IPoE).
- PPPoE point-to-point over Ethernet
- IPoE Internet protocol over Ethernet
- BBNG device 25 is connected with a broadband access node 21 through bridges or switches 22 & 23 , which are frequently referred to as aggregation (Agg) devices.
- Agg aggregation
- Access node 21 is basically a user-facing provider edge (u-PE) device, which, in this example, comprises an Ethernet DSLAM that has a subscriber-facing UNI port connected with a RG device 20 .
- BBNG 25 is shown with a MEP 46 at Level 0 and a MEP 47 at Level 3.
- access node 21 is shown with a DSL port having a MEP 42 at Level 3 (Ethernet or provider domain), a MIP 43 at Level 0, and a MEP 41 at link Level 7 (DSL domain).
- MIPs 48 and 49 run on aggregation switches 22 & 23 , respectively.
- access node 21 has an inward MEP, a MIP, and an output MEP stacked together.
- the inward MEP is defined as the one which is responding to messages originating from the other side of the MAC relay function, whereas the outward MEP is the one which is responding to messages originating at the same side of the relay function.
- the interior facing function (IFF) of the MEP faces the bridging component and functions to send continuity check messages (CCMs), maintain a line status database, and also send, and reply to, loopback (“ping”) messages and trace route messages.
- CCMs continuity check messages
- ping loopback
- Each MEP also has an exterior facing function (EFF) that sends signals in the opposite direction of the MEP, e.g., for an alarm indication signal (AIS) that provides notification to other elements that there is a fault in the Ethernet network.
- EDF exterior facing function
- each MEP also has a virtual interior facing function (VIFF) that maintains a database by relying on the physical level or link level OAM (e.g., MPLS OAM, ATM OAM, 802.3ah OAM, etc.)
- OAM physical level or link level
- MEP 41 on access node 21 receives line status signals at Level 7 through its VIFF.
- the EFF on MEP 41 at Level 7 can send an alarm indication signal (AIS) that will bubble up to Level 0 to reach BBNG 25 .
- AIS alarm indication signal
- Practitioners in the arts will understand that the VIFF is optional in a MEP.
- the VIFF is only present when the link layer has certain characteristics, e.g., it is emulated via MPLS or has 80
- the network diagram of FIG. 2 also includes vMEPs 44 & 45 at Levels 0 & 7, respectively.
- Virtual MEPs 44 & 45 are shown logically on RG 20 , but in actuality, vMEPs 44 & 45 comprise a software construct that runs on one or more processors of access node 21 .
- the vMEPs may alternatively comprise hardware resident on the access node.
- the vMEPs at each Level are implemented as software (or firmware) code that is executed by a processor of the DSLAM.
- the function of the vMEP is to emulate a MEP on the broadband access node so as to allow interworking between legacy broadband access link level OAM schemes and 802.1ag signals that are commonly sent across the Ethernet access domain network.
- FIG. 3 is a flow chart diagram that illustrates an example network operation in accordance with one embodiment of the present invention in which a network administrator verifies connectivity in response to a complaint from a subscriber.
- the verification process begins with the transmission of an 802.1ag loopback message by a MEP on the BBNG of the Ethernet access domain at the request of the network administrator (block 31 ).
- the purpose of the loopback message is to determine whether the target maintenance end point is reachable or not, similar in concept to an Internet Control Message Protocol (ICMP) echo or “ping” message.
- ICMP Internet Control Message Protocol
- the vMEP running on the DSLAM translates the loopback message into a legacy OAM loopback message appropriate for the customer link between the DSLAM and RG.
- the 802.1ag loopback message is translated into an ATM loopback message (block 32 ).
- the 802.1ag loopback message may be translated into an 802.3ah loopback message, or another type of connectivity check message that checks the real, physical connection path between the RG and access node.
- the vMEP on the DSLAM After the DSLAM sends out and receives the ATM loopback message response back from the RG (block 33 ), thereby confirming connectivity with the subscriber at the link level, the vMEP on the DSLAM generates an 802.1ag loopback reply message (block 34 that is transmitted back to the BBNG (block 35 ). Note that from the standpoint of the BBNG, the translation process that occurs at the DSLAM is completely transparent. Thus, through the use of virtual MEPs the BBNG router can send a connectivity check message at the Ethernet domain Level which results in a remote ATM loopback (via the VIFF function) on the DSL line. In the example of FIG.
- Outward facing MEP 41 of access node 21 “receives” the loopback message from vMEP 45 at the same Level.
- MIP 43 is defined to allow higher domain level message “translation” between inward and outward MEPs 42 & 41 , such that the inward MEP 42 can send a connectivity status message reply back to MEP 47 of BBNG 25 .
- the vMEPs on the access node may proactively issue periodic connectivity check messages. These are “heart-beat” multicast messages that allow the vMEPs to detect loss of service connectivity, basically emulating 802.1ag CCMs at a high level.
- the ability of a MEP to send a unicast message to another target MEP located at the same maintenance association (MA) level relies on the source MEP's database containing an entry that includes the MAC address and MEP-ID of the target MEP.
- the 802.1ag standard may be implemented in software or as part of hardware application specific integrated circuits (ASICs) that comprise the I/O system or hardware modules on the network nodes.
- ASICs application specific integrated circuits
- MEPs configured on a subscriber port are administratively configured (either manually or automatically) with a MEP_Name parameter.
- the MEP_Name is similar to the circuit-id or customer-line-id that broadband operators typically use to identify a DSL line associated with a given customer and service instance of the customer.
- the MEP_Name may take a variety of different formats, such as the format specified in Request for Comment, RFC3046 (Dynamic Host Configuration Protocol (DHCP) Option82).
- Another suitable format is the MEP NAME Type Length Value (TVL) specified in 19.3.11.3.2 of IEEE802.1ag.
- translation of the MEP_Name to the corresponding MAC address and MEP-ID takes place in accordance with a maintenance point resolution protocol in which MEPs that have CCMs disabled are configured to process two maintenance point resolution messages: a Maintenance Point Resolution Query Message (MRQM), and a Maintenance Point Resolution Response Message (MRRM).
- MQM Maintenance Point Resolution Query Message
- MRRM Maintenance Point Resolution Response Message
- the purpose of the MRQM is to query, within the VLAN (or Service Virtual Local Area Network (S-VLAN)) and at the MA level, all MEPs to determine which are configured with a particular MEP_Name (not found in the querying MEP's local database).
- the target MEP_Name i.e., the name of the MEP whose address is trying to be resolved
- MAID Maintenance Association Identifier
- the MRQM is multicast to all MEPs with a specific opcode defined for the targeted MA level.
- All MEPs receiving the MRQM and recognizing the opcode respond by comparing the received MEP_Name to the locally configured MEP_Name. In the event of a match, the MEP responds with a MRRM back to the querying MEP. All MEPs that do not find a local match with the MEP_Name silently drop the message and take no further action. Queries that result in no response received back after a reasonable amount of time may generate a “MEP_Name Unresolved” message that is communicated to the network administrator or operator.
- MEPs not recognizing the specified opcode are configured to simply behave in accordance with the procedures set forth in 802.1ag for handling an unknown opcode.
- the purpose of the MRRM is to allow a MEP that has a local matching MEP_Name to reply to a MRQM from a querying or originating MEP in the VLAN (or S-VLAN) and at the MA level on which the query was received.
- the MRRM is a unicast message that contains the MEP_Name, MAID, MEP-ID, and the MEP MAC address as TLVs using the standard CFM message header.
- the MRQM is multicast to all MEPs with a specific opcode defined for the targeted MA level. All MEPs receiving the MRQM and recognizing the opcode respond by comparing the received MEP_Name to the locally configured MEP_Name. In the event of a match, the MEP responds with a MRRM back to the querying MEP. All MEPs that do not find a local match with the MEP_Name simply drop the message and take no further action.
- the original querying MEP Upon receiving the MRRM, the original querying MEP updates its local database with the MEP-ID and the MEP MAC address information contained in the MRRM.
- both MRRMs and CCMs can be utilized to populate the MEP databases. That is, not all MEPs are required to have continuity check messaging disabled; instead, some MEPs may have CCMs disabled while other MEPs have continuity check messaging enabled.
- queries that result in no response received back after a reasonable amount of time may generate a “MEP_Name Unresolved” message that is communicated to the network administrator or operator. In the event that multiple responses are received, a MEP may report a “MEP_Name Inconsistency” error to the network administrator.
- FIG. 5 is a flow chart diagram summarizing the operations described above.
- IEEE 802.1ag is enhanced with the ability to selectively turn off CCMs so as to overcome the problems associated with flooding the network with such messages.
- CCMs turned off, a maintenance point resolution protocol is implemented wherein each MEP of the network is configured with a MEP_Name.
- the process of resolving the MEP-ID and MEP MAC address parameters of a MEP situated on a user-line begins with the issuance of a multicast MRQM from a remote point (e.g., a BBNG) which contains the MEP_Name of the target MEP (block 61 ).
- MEPs that receive the MRQM and recognize the opcode respond by checking their local database for a configuration match with the MEP_Name contained within the MRQM (block 62 ). In the event of a match, the MEP replies with a MRRM unicast back to the querying MEP.
- the MRRM includes the replying MEP's MEP-ID and MEP MAC address (block 63 ).
- the address resolution process is completed when the MRRM is received by the querying MEP, which then updates its local database with the MEP-ID and MEP MAC address information (block 64 ).
- elements of the present invention may be provided as a computer program product which may include a machine-readable medium having stored thereon instructions which may be used to program a computer (e.g., a processor or other electronic device) to perform a sequence of operations. Alternatively, the operations may be performed by a combination of hardware and software.
- the machine-readable medium may include, but is not limited to, floppy diskettes, optical disks, CD-ROMs, and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, magnet or optical cards, or other type of machine-readable medium suitable for storing electronic instructions.
- Elements of the present invention may be downloaded as a computer program product, wherein the program may be transferred to a node or switch by way of data signals embodied in a carrier wave or other propagation medium via a communication link (e.g., a modem or network connection).
- a communication link e.g., a modem or network connection
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---|---|---|---|---|
US20100238791A1 (en) * | 2008-09-15 | 2010-09-23 | Ian Duncan | Systems and methods for connectivity fault management extensions for automated activation of services through association of service related attributes |
US20110255417A1 (en) * | 2007-10-12 | 2011-10-20 | Nortel Networks Limited | Automatic mep provisioning in a link state controlled ethernet network |
US20120207014A1 (en) * | 2007-11-02 | 2012-08-16 | Panagiotis Saltsidis | System and method for ethernet protection switching in a provider backbone bridging traffic engineering domain |
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US8194643B2 (en) * | 2006-10-19 | 2012-06-05 | Embarq Holdings Company, Llc | System and method for monitoring the connection of an end-user to a remote network |
US8717911B2 (en) * | 2006-06-30 | 2014-05-06 | Centurylink Intellectual Property Llc | System and method for collecting network performance information |
US8477614B2 (en) | 2006-06-30 | 2013-07-02 | Centurylink Intellectual Property Llc | System and method for routing calls if potential call paths are impaired or congested |
US8289965B2 (en) | 2006-10-19 | 2012-10-16 | Embarq Holdings Company, Llc | System and method for establishing a communications session with an end-user based on the state of a network connection |
US8102770B2 (en) * | 2006-08-22 | 2012-01-24 | Embarq Holdings Company, LP | System and method for monitoring and optimizing network performance with vector performance tables and engines |
US8743703B2 (en) | 2006-08-22 | 2014-06-03 | Centurylink Intellectual Property Llc | System and method for tracking application resource usage |
US8199653B2 (en) * | 2006-08-22 | 2012-06-12 | Embarq Holdings Company, Llc | System and method for communicating network performance information over a packet network |
US8307065B2 (en) | 2006-08-22 | 2012-11-06 | Centurylink Intellectual Property Llc | System and method for remotely controlling network operators |
US8015294B2 (en) | 2006-08-22 | 2011-09-06 | Embarq Holdings Company, LP | Pin-hole firewall for communicating data packets on a packet network |
US7684332B2 (en) | 2006-08-22 | 2010-03-23 | Embarq Holdings Company, Llc | System and method for adjusting the window size of a TCP packet through network elements |
US20080049639A1 (en) * | 2006-08-22 | 2008-02-28 | Wiley William L | System and method for managing a service level agreement |
US8619600B2 (en) | 2006-08-22 | 2013-12-31 | Centurylink Intellectual Property Llc | System and method for establishing calls over a call path having best path metrics |
US8189468B2 (en) | 2006-10-25 | 2012-05-29 | Embarq Holdings, Company, LLC | System and method for regulating messages between networks |
US8064391B2 (en) | 2006-08-22 | 2011-11-22 | Embarq Holdings Company, Llc | System and method for monitoring and optimizing network performance to a wireless device |
US8125897B2 (en) * | 2006-08-22 | 2012-02-28 | Embarq Holdings Company Lp | System and method for monitoring and optimizing network performance with user datagram protocol network performance information packets |
US8194555B2 (en) * | 2006-08-22 | 2012-06-05 | Embarq Holdings Company, Llc | System and method for using distributed network performance information tables to manage network communications |
US8144587B2 (en) | 2006-08-22 | 2012-03-27 | Embarq Holdings Company, Llc | System and method for load balancing network resources using a connection admission control engine |
US8238253B2 (en) * | 2006-08-22 | 2012-08-07 | Embarq Holdings Company, Llc | System and method for monitoring interlayer devices and optimizing network performance |
US8228791B2 (en) * | 2006-08-22 | 2012-07-24 | Embarq Holdings Company, Llc | System and method for routing communications between packet networks based on intercarrier agreements |
US9479341B2 (en) * | 2006-08-22 | 2016-10-25 | Centurylink Intellectual Property Llc | System and method for initiating diagnostics on a packet network node |
US8537695B2 (en) | 2006-08-22 | 2013-09-17 | Centurylink Intellectual Property Llc | System and method for establishing a call being received by a trunk on a packet network |
US8549405B2 (en) | 2006-08-22 | 2013-10-01 | Centurylink Intellectual Property Llc | System and method for displaying a graphical representation of a network to identify nodes and node segments on the network that are not operating normally |
US8130793B2 (en) | 2006-08-22 | 2012-03-06 | Embarq Holdings Company, Llc | System and method for enabling reciprocal billing for different types of communications over a packet network |
US8144586B2 (en) * | 2006-08-22 | 2012-03-27 | Embarq Holdings Company, Llc | System and method for controlling network bandwidth with a connection admission control engine |
US8224255B2 (en) * | 2006-08-22 | 2012-07-17 | Embarq Holdings Company, Llc | System and method for managing radio frequency windows |
US8407765B2 (en) | 2006-08-22 | 2013-03-26 | Centurylink Intellectual Property Llc | System and method for restricting access to network performance information tables |
US7843831B2 (en) | 2006-08-22 | 2010-11-30 | Embarq Holdings Company Llc | System and method for routing data on a packet network |
US8274905B2 (en) | 2006-08-22 | 2012-09-25 | Embarq Holdings Company, Llc | System and method for displaying a graph representative of network performance over a time period |
US8107366B2 (en) | 2006-08-22 | 2012-01-31 | Embarq Holdings Company, LP | System and method for using centralized network performance tables to manage network communications |
US8576722B2 (en) | 2006-08-22 | 2013-11-05 | Centurylink Intellectual Property Llc | System and method for modifying connectivity fault management packets |
US8223655B2 (en) | 2006-08-22 | 2012-07-17 | Embarq Holdings Company, Llc | System and method for provisioning resources of a packet network based on collected network performance information |
US8531954B2 (en) * | 2006-08-22 | 2013-09-10 | Centurylink Intellectual Property Llc | System and method for handling reservation requests with a connection admission control engine |
US8750158B2 (en) | 2006-08-22 | 2014-06-10 | Centurylink Intellectual Property Llc | System and method for differentiated billing |
CN1937531B (en) * | 2006-08-28 | 2010-05-12 | 华为技术有限公司 | Method and device for detecting and maintaining group integrity, and end increasing method and device |
US20080101241A1 (en) * | 2006-10-31 | 2008-05-01 | Nortel Networks Limited | Ethernet OAM at intermediate nodes in a PBT network |
US7929455B2 (en) * | 2006-12-20 | 2011-04-19 | Alcatel Lucent | Bridge and method for optimization of memory for Ethernet OAM multicast frames |
US7693164B1 (en) * | 2007-02-05 | 2010-04-06 | World Wide Packets, Inc. | Configuring a packet tunnel network |
US8416789B1 (en) * | 2007-02-05 | 2013-04-09 | World Wide Packets, Inc. | Multipoint packet forwarding using packet tunnels |
US8416790B1 (en) | 2007-02-05 | 2013-04-09 | World Wide Packets, Inc. | Processing Ethernet packets associated with packet tunnels |
US8040820B2 (en) * | 2007-03-06 | 2011-10-18 | Cisco Technology, Inc. | Modelling service flows in dynamic access domains |
US8400910B1 (en) * | 2007-04-13 | 2013-03-19 | World Wide Packets, Inc. | Associated tunnels terminating on different packet switches and relaying packets via different tunnel combinations |
US9071666B2 (en) * | 2007-04-26 | 2015-06-30 | Alcatel Lucent | Edge router and method for dynamic learning of an end device MAC address |
US8111692B2 (en) * | 2007-05-31 | 2012-02-07 | Embarq Holdings Company Llc | System and method for modifying network traffic |
CN101355441B (en) * | 2007-07-27 | 2012-04-04 | 华为技术有限公司 | Method, system and equipment for configuring operation management maintain attribute |
US8121041B2 (en) * | 2007-07-30 | 2012-02-21 | Cisco Technology, Inc. | Redundancy for point-to-multipoint and multipoint-to-multipoint ethernet virtual connections |
US8305884B2 (en) * | 2007-09-14 | 2012-11-06 | Ciena Corporation | Systems and methods for a self-healing carrier ethernet topology |
US20090094651A1 (en) * | 2007-10-09 | 2009-04-09 | Alcatel Lucent | Ethernet-Level Measurement of Multicast Group Delay Performance |
US8284678B2 (en) * | 2007-10-30 | 2012-10-09 | Ericsson Ab | Scalable connectivity fault management in a bridged/virtual private LAN service environment |
GB0724859D0 (en) * | 2007-12-20 | 2008-01-30 | Ericsson Telefon Ab L M | Improvements in or relating to networks |
WO2009089645A1 (en) * | 2008-01-14 | 2009-07-23 | Alcatel Shanghai Bell Co., Ltd. | Methods and systems for continuity check of ethernet multicast |
US8068425B2 (en) | 2008-04-09 | 2011-11-29 | Embarq Holdings Company, Llc | System and method for using network performance information to determine improved measures of path states |
CN101369922B (en) * | 2008-09-28 | 2011-04-06 | 华为技术有限公司 | Connectivity detection method and maintenance field terminal and system |
US8767587B1 (en) | 2009-01-21 | 2014-07-01 | Cisco Technology, Inc. | Exploratory linktrace operations in a computer network |
US8125914B2 (en) * | 2009-01-29 | 2012-02-28 | Alcatel Lucent | Scaled Ethernet OAM for mesh and hub-and-spoke networks |
US8599860B2 (en) * | 2009-05-14 | 2013-12-03 | Futurewei Technologies, Inc. | Multiple prefix connections with translated virtual local area network |
US8458322B2 (en) | 2009-07-24 | 2013-06-04 | Cisco Technology, Inc. | Dynamic management of maintenance association membership in a computer network |
US8254409B2 (en) * | 2009-12-01 | 2012-08-28 | Cisco Technology, Inc. | User isolation between network devices |
US8416696B2 (en) * | 2010-01-04 | 2013-04-09 | Cisco Technology, Inc. | CFM for conflicting MAC address notification |
JP5376047B2 (en) | 2010-03-31 | 2013-12-25 | 日本電気株式会社 | COMMUNICATION DEVICE, COMMUNICATION SYSTEM, SETTING METHOD, SETTING PROGRAM, AND SETTING CIRCUIT |
CN102263654B (en) * | 2010-05-26 | 2013-11-06 | 杭州华三通信技术有限公司 | In-maintenance domain multilayer cross-level alarm suppression method, system and device |
US10564613B2 (en) * | 2010-11-19 | 2020-02-18 | Hubbell Incorporated | Control system and method for managing wireless and wired components |
JP5604354B2 (en) * | 2011-04-05 | 2014-10-08 | 株式会社日立製作所 | Connectivity monitoring method and control method by subscriber termination device |
CN102185711B (en) * | 2011-04-26 | 2014-12-10 | 中兴通讯股份有限公司 | Method and equipment for detecting link failure in hybrid network |
US9191290B2 (en) | 2011-06-20 | 2015-11-17 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and devices for monitoring a data path |
US20130121164A1 (en) * | 2011-11-11 | 2013-05-16 | Nokia Siemens Networks Ethernet Solutions, Ltd. | One to Many OAM/Protection Inter-Working Function |
US9106555B2 (en) | 2012-01-25 | 2015-08-11 | Cisco Technology, Inc. | Troubleshooting routing topology based on a reference topology |
CN103595636A (en) * | 2012-08-13 | 2014-02-19 | 华为技术有限公司 | A method, an apparatus and a system for obtaining maintenance entity group end point MAC addresses |
CN103036793B (en) * | 2012-12-17 | 2015-09-16 | 杭州华三通信技术有限公司 | Be communicated with sending method and the forwarding unit of error detection protocol message |
US9923756B2 (en) | 2014-09-11 | 2018-03-20 | Adva Optical Networking Se | Maintenance entity group end point of a subnetwork within a multi-domain network |
US10449064B2 (en) * | 2015-02-12 | 2019-10-22 | Boston Scientific Scimed, Inc. | Stent with anti-migration feature |
US9641458B2 (en) * | 2015-02-19 | 2017-05-02 | Accedian Network Inc. | Providing efficient routing of an operations, administration and maintenance (OAM) frame received at a port of an ethernet switch |
CN106209640B (en) * | 2016-06-24 | 2019-03-05 | 湖南恒茂高科股份有限公司 | Down MEP message processing method and system |
US10996971B2 (en) * | 2018-07-12 | 2021-05-04 | Verizon Patent And Licensing Inc. | Service OAM for virtual systems and services |
Citations (99)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5848227A (en) | 1992-10-13 | 1998-12-08 | International Business Machines Corporation | Method of providing fault tolerance and switch-over distribution in a bridge/router |
US6055364A (en) | 1997-07-31 | 2000-04-25 | Cisco Technology, Inc. | Content-based filtering of multicast information |
US6073176A (en) | 1996-07-29 | 2000-06-06 | Cisco Technology, Inc. | Dynamic bidding protocol for conducting multilink sessions through different physical termination points |
US6078590A (en) | 1997-07-14 | 2000-06-20 | Cisco Technology, Inc. | Hierarchical routing knowledge for multicast packet routing |
US6188694B1 (en) | 1997-12-23 | 2001-02-13 | Cisco Technology, Inc. | Shared spanning tree protocol |
US6301244B1 (en) | 1998-12-11 | 2001-10-09 | Nortel Networks Limited | QoS-oriented one-to-all route selection method for communication networks |
US6304575B1 (en) | 1998-08-31 | 2001-10-16 | Cisco Technology, Inc. | Token ring spanning tree protocol |
US6308282B1 (en) | 1998-11-10 | 2001-10-23 | Honeywell International Inc. | Apparatus and methods for providing fault tolerance of networks and network interface cards |
US20020032780A1 (en) | 2000-04-24 | 2002-03-14 | Microsoft Corporation | Systems and methods for uniquely and persistently identifying networks |
US6373838B1 (en) | 1998-06-29 | 2002-04-16 | Cisco Technology, Inc. | Dial access stack architecture |
US20020087721A1 (en) | 2000-12-28 | 2002-07-04 | Yoshikazu Sato | Duplicate private address translating system and duplicate address network system |
US6424657B1 (en) | 2000-08-10 | 2002-07-23 | Verizon Communications Inc. | Traffic queueing for remote terminal DSLAMs |
US6430621B1 (en) | 1998-12-29 | 2002-08-06 | Nortel Networks Limited | System using different tag protocol identifiers to distinguish between multiple virtual local area networks |
US20020156612A1 (en) * | 2001-04-20 | 2002-10-24 | Peter Schulter | Address resolution protocol system and method in a virtual network |
US6484209B1 (en) | 1997-10-31 | 2002-11-19 | Nortel Networks Limited | Efficient path based forwarding and multicast forwarding |
US20020196795A1 (en) | 2001-06-22 | 2002-12-26 | Anritsu Corporation | Communication relay device with redundancy function for line in network in accordance with WAN environment and communication system using the same |
US6502140B1 (en) | 1999-01-29 | 2002-12-31 | International Business Machines Corporation | Multicast support for small groups |
US20030012183A1 (en) | 2000-02-11 | 2003-01-16 | David Butler | Methods and systems for creating, distributing and executing multimedia telecommunications applications over circuit and packet switched networks |
US6519231B1 (en) | 1999-01-12 | 2003-02-11 | Nortel Networks Limited | Method and apparatus providing a spanning tree protocol for a data communications network having a multi-link trunk |
US20030036375A1 (en) | 2001-08-17 | 2003-02-20 | Weijing Chen | Public wireless local area network |
US20030101243A1 (en) | 2001-11-27 | 2003-05-29 | Donahue David B. | System and method for automatic confuguration of a bi-directional IP communication device |
US20030110268A1 (en) | 2001-12-07 | 2003-06-12 | Francois Kermarec | Methods of establishing virtual circuits and of providing a virtual private network service through a shared network, and provider edge device for such network |
US20030112781A1 (en) * | 2001-12-17 | 2003-06-19 | Kermode Roger George | Communications unit for secure communications |
US20030142674A1 (en) | 2002-01-30 | 2003-07-31 | Nortel Networks Limited | Label control method and apparatus for virtual private LAN segment networks |
US20030154259A1 (en) | 2002-02-08 | 2003-08-14 | Marc Lamberton | Method of providing a virtual private network service through a shared network, and provider edge device for such network |
US6611869B1 (en) | 1999-10-28 | 2003-08-26 | Networks Associates, Inc. | System and method for providing trustworthy network security concern communication in an active security management environment |
US20030177221A1 (en) | 2002-03-18 | 2003-09-18 | Hamid Ould-Brahim | Resource allocation using an auto-discovery mechanism for provider-provisioned layer-2 and layer-3 Virtual Private Networks |
US6665273B1 (en) | 2000-01-11 | 2003-12-16 | Cisco Technology, Inc. | Dynamically adjusting multiprotocol label switching (MPLS) traffic engineering tunnel bandwidth |
US6668282B1 (en) | 2000-08-02 | 2003-12-23 | International Business Machines Corporation | System and method to monitor and determine if an active IPSec tunnel has become disabled |
US6693878B1 (en) | 1999-10-15 | 2004-02-17 | Cisco Technology, Inc. | Technique and apparatus for using node ID as virtual private network (VPN) identifiers |
US6732189B1 (en) | 2000-03-20 | 2004-05-04 | International Business Machines Corporation | Method and apparatus for fault tolerant tunneling of multicast datagrams |
US20040095940A1 (en) | 2002-11-15 | 2004-05-20 | Chin Yuan | Virtual interworking trunk interface and method of operating a universal virtual private network device |
US20040102182A1 (en) | 2001-03-22 | 2004-05-27 | Lothar Reith | Method of providing networks services |
US6757286B1 (en) | 1997-03-24 | 2004-06-29 | Alcatel | Self-configuring communication network |
US20040125809A1 (en) | 2002-12-31 | 2004-07-01 | Jeng Jack Ing | Ethernet interface over ATM Cell, UTOPIA xDSL in single and multiple channels converter/bridge on a single chip and method of operation |
US6763469B1 (en) | 1999-03-03 | 2004-07-13 | Telecom Italia S.P.A. | Systems for local network security |
US20040141501A1 (en) * | 2001-06-15 | 2004-07-22 | Adams John L | Communications network |
US20040151180A1 (en) * | 2003-02-03 | 2004-08-05 | Sbc Properties, Lp | Enhanced H-VPLS service architecture using control word |
US20040158735A1 (en) | 2002-10-17 | 2004-08-12 | Enterasys Networks, Inc. | System and method for IEEE 802.1X user authentication in a network entry device |
US20040165600A1 (en) | 2003-02-21 | 2004-08-26 | Alcatel | Customer site bridged emulated LAN services via provider provisioned connections |
US20040165525A1 (en) | 2003-02-10 | 2004-08-26 | Invensys Systems, Inc. | System and method for network redundancy |
US6785265B2 (en) | 2002-07-08 | 2004-08-31 | Sbc Properties, L.P. | Ethernet-based digital subscriber line methods and systems |
US20040172559A1 (en) | 2002-11-26 | 2004-09-02 | Huawei Technologies Co., Ltd. | 802.1X protocol-based multicasting control method |
US6798775B1 (en) | 1999-06-10 | 2004-09-28 | Cisco Technology, Inc. | Virtual LANs over a DLSw network |
US20040213201A1 (en) * | 2003-04-28 | 2004-10-28 | Hakan Osterlund | Policy based media path selection in a broadband access network |
US20040228291A1 (en) | 2003-05-15 | 2004-11-18 | Huslak Nicolas Steven | Videoconferencing using managed quality of service and/or bandwidth allocation in a regional/access network (RAN) |
US20040233891A1 (en) | 2003-04-28 | 2004-11-25 | Alcatel Ip Networks, Inc. | Virtual private network fault tolerance |
US6826698B1 (en) | 2000-09-15 | 2004-11-30 | Networks Associates Technology, Inc. | System, method and computer program product for rule based network security policies |
US6829252B1 (en) | 1999-05-26 | 2004-12-07 | 3Com Corporation | Digital subscriber line access multiplexer for use with ethernet over VDSL transport facility |
US20040264364A1 (en) | 2003-06-27 | 2004-12-30 | Nec Corporation | Network system for building redundancy within groups |
US6839348B2 (en) | 1999-04-30 | 2005-01-04 | Cisco Technology, Inc. | System and method for distributing multicasts in virtual local area networks |
US20050007951A1 (en) | 2003-07-11 | 2005-01-13 | Roger Lapuh | Routed split multilink trunking |
US6850542B2 (en) | 2000-11-14 | 2005-02-01 | Broadcom Corporation | Linked network switch configuration |
US20050025143A1 (en) | 2003-07-29 | 2005-02-03 | Sbc Knowledge Ventures, L.P. | Broadband access for virtual private networks |
US6852542B2 (en) | 2003-02-03 | 2005-02-08 | Spectra Gases, Inc. | Method and system for creating a mercury halide standard for use in testing a mercury analyzer system |
US20050030975A1 (en) | 2003-08-07 | 2005-02-10 | Bellsouth Intellectual Property Corporation | Methods and systems for providing network access service utilizing multiple asymmetric DSL modems per service point |
US20050044265A1 (en) | 2003-07-04 | 2005-02-24 | France Telecom | Method for automatic configuration of an access router compatible with the DHCP protocol, for specific automatic processing of IP flows from a client terminal |
US20050049887A1 (en) * | 2003-08-29 | 2005-03-03 | Bulleit Douglas A. | Methods, systems, and computer program products for allocating costs in using a broadband communication network |
US20050063397A1 (en) | 2003-09-19 | 2005-03-24 | Cisco Technology, Inc. | Methods and apparatus for switching between Metro Ethernet networks and external networks |
US20050068972A1 (en) * | 2003-09-26 | 2005-03-31 | Burns Dave J. | Method and system for connection verification |
US6882643B1 (en) | 1999-07-16 | 2005-04-19 | Nortel Networks Limited | Supporting multiple services in label switched networks |
US6892309B2 (en) | 2002-02-08 | 2005-05-10 | Enterasys Networks, Inc. | Controlling usage of network resources by a user at the user's entry point to a communications network based on an identity of the user |
US20050152370A1 (en) | 2003-10-06 | 2005-07-14 | Meehan Thomas J. | Protocol for messaging between a centralized broadband remote aggregation server and other devices |
US20050157751A1 (en) | 2004-01-20 | 2005-07-21 | Sameh Rabie | Method and system for ethernet and frame relay network interworking |
US20050157664A1 (en) | 2000-08-31 | 2005-07-21 | Baum Robert T. | Methods, apparatus and data structures for segmenting customers using at least a portion of a layer 2 address header or bits in the place of a layer 2 address header |
US20050163049A1 (en) | 2000-05-17 | 2005-07-28 | Takeki Yazaki | Packet shaper |
US20050175022A1 (en) | 2002-12-03 | 2005-08-11 | Fujitsu Limited | Bridge apparatus and logical queue control method |
US20050190773A1 (en) | 2002-10-25 | 2005-09-01 | Huawei Technologies Co., Ltd. | Sub-rate transmission method for user data services in transmission devices of a metropolitan area network |
US6954436B1 (en) | 2001-02-28 | 2005-10-11 | Extreme Networks, Inc. | Method and apparatus for selecting redundant routers using tracking |
US20050232228A1 (en) * | 2004-04-16 | 2005-10-20 | Alcatel | Method and system configured for facilitating residential broadband service |
US20050232186A1 (en) * | 2004-04-16 | 2005-10-20 | Jeyhan Karaoguz | Method and system for extended network access services advertising via a broadband access gateway |
US20050239445A1 (en) * | 2004-04-16 | 2005-10-27 | Jeyhan Karaoguz | Method and system for providing registration, authentication and access via broadband access gateway |
US20050249124A1 (en) * | 2004-05-10 | 2005-11-10 | Alcatel | Remote access link fault indication mechanism |
US20050265309A1 (en) * | 2004-05-25 | 2005-12-01 | Harshavardhan Parandekar | Local area network services in a cable modem network |
US20050286503A1 (en) | 2003-05-27 | 2005-12-29 | Sotaro Oda | Communication device |
US20060007867A1 (en) * | 2004-07-08 | 2006-01-12 | Alcatel | Domain configuration in an ethernet OAM network having multiple levels |
US7003102B2 (en) * | 2001-10-10 | 2006-02-21 | Pulse Engineering, Inc. | Telecommunications gateway and method |
US7009983B2 (en) | 2002-11-05 | 2006-03-07 | Enterasys Networks, Inc. | Methods and apparatus for broadcast domain interworking |
US20060056414A1 (en) * | 2004-09-16 | 2006-03-16 | David Elie-Dit-Cosaque | System and method for securing an Ethernet connectivity fault management (CFM) domain defined on a VLAN |
US20060092847A1 (en) * | 2003-11-10 | 2006-05-04 | Nortel Networks Limited | Method and apparatus for providing availability metrics for measurement and management of Ethernet services |
US20060098607A1 (en) | 2004-10-28 | 2006-05-11 | Meshnetworks, Inc. | System and method to support multicast routing in large scale wireless mesh networks |
US20060153220A1 (en) * | 2004-12-22 | 2006-07-13 | Alcatel | System and method for reducing OAM frame leakage in an ethernet OAM domain |
US7092389B2 (en) | 2001-01-30 | 2006-08-15 | At&T Corp. | Technique for ethernet access to packet-based services |
US20060182037A1 (en) | 2003-12-15 | 2006-08-17 | Sbc Knowledge Ventures, L.P. | System and method to provision MPLS/VPN network |
US7113512B1 (en) | 2001-12-12 | 2006-09-26 | At&T Corp. | Ethernet-to-ATM interworking technique |
US7116665B2 (en) | 2002-06-04 | 2006-10-03 | Fortinet, Inc. | Methods and systems for a distributed provider edge |
US20060248277A1 (en) | 2005-04-29 | 2006-11-02 | Anand Pande | System, method, and apparatus for least recently used determination for caches |
US20060262794A1 (en) * | 2005-04-08 | 2006-11-23 | Interdigital Technology Corporation | Method and apparatus for transmitting concatenated frames in a wireless communication system |
US20060285500A1 (en) | 2005-06-15 | 2006-12-21 | Booth Earl H Iii | Method and apparatus for packet loss detection |
US20060285501A1 (en) * | 2005-06-17 | 2006-12-21 | Gerard Damm | Performance monitoring of frame transmission in data network oam protocols |
US7173934B2 (en) | 2001-09-10 | 2007-02-06 | Nortel Networks Limited | System, device, and method for improving communication network reliability using trunk splitting |
WO2007031002A1 (en) | 2005-09-15 | 2007-03-22 | Huawei Technologies Co., Ltd. | A method and apparatus for realizing the interworking of oam function between the ethernet and the mpls network |
US7277936B2 (en) | 2003-03-03 | 2007-10-02 | Hewlett-Packard Development Company, L.P. | System using network topology to perform fault diagnosis to locate fault between monitoring and monitored devices based on reply from device at switching layer |
US7310342B2 (en) * | 2000-09-29 | 2007-12-18 | Dialogic Corporation | Auto ATM-VC detection for ATM network access devices |
US7315554B2 (en) * | 2000-08-31 | 2008-01-01 | Verizon Communications Inc. | Simple peering in a transport network employing novel edge devices |
US7345991B1 (en) | 2003-05-28 | 2008-03-18 | Atrica Israel Ltd. | Connection protection mechanism for dual homed access, aggregation and customer edge devices |
WO2008089370A1 (en) | 2007-01-17 | 2008-07-24 | Nortel Networks Limited | Method and apparatus for interworking ethernet and mpls networks |
US7408936B2 (en) | 2004-08-20 | 2008-08-05 | Alcatel Lucent | Scalable VLAN grouping in a provider Metro Ethernet |
US7466703B1 (en) | 1998-05-01 | 2008-12-16 | Alcatel-Lucent Usa Inc. | Scalable high speed router apparatus |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5848277A (en) * | 1996-02-12 | 1998-12-08 | Ford Motor Company | Method for providing both level-sensitive and edge-sensitive interrupt signals on a serial interface between a peripheral and host |
US7110636B2 (en) * | 2003-07-11 | 2006-09-19 | Sumitomo Electric Industries, Ltd. | Optical device control apparatus and optical device control method |
-
2005
- 2005-07-12 US US11/179,993 patent/US7889754B2/en active Active
Patent Citations (100)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5848227A (en) | 1992-10-13 | 1998-12-08 | International Business Machines Corporation | Method of providing fault tolerance and switch-over distribution in a bridge/router |
US6073176A (en) | 1996-07-29 | 2000-06-06 | Cisco Technology, Inc. | Dynamic bidding protocol for conducting multilink sessions through different physical termination points |
US6757286B1 (en) | 1997-03-24 | 2004-06-29 | Alcatel | Self-configuring communication network |
US6078590A (en) | 1997-07-14 | 2000-06-20 | Cisco Technology, Inc. | Hierarchical routing knowledge for multicast packet routing |
US6055364A (en) | 1997-07-31 | 2000-04-25 | Cisco Technology, Inc. | Content-based filtering of multicast information |
US6484209B1 (en) | 1997-10-31 | 2002-11-19 | Nortel Networks Limited | Efficient path based forwarding and multicast forwarding |
US6188694B1 (en) | 1997-12-23 | 2001-02-13 | Cisco Technology, Inc. | Shared spanning tree protocol |
US7466703B1 (en) | 1998-05-01 | 2008-12-16 | Alcatel-Lucent Usa Inc. | Scalable high speed router apparatus |
US6373838B1 (en) | 1998-06-29 | 2002-04-16 | Cisco Technology, Inc. | Dial access stack architecture |
US6304575B1 (en) | 1998-08-31 | 2001-10-16 | Cisco Technology, Inc. | Token ring spanning tree protocol |
US6308282B1 (en) | 1998-11-10 | 2001-10-23 | Honeywell International Inc. | Apparatus and methods for providing fault tolerance of networks and network interface cards |
US6301244B1 (en) | 1998-12-11 | 2001-10-09 | Nortel Networks Limited | QoS-oriented one-to-all route selection method for communication networks |
US6430621B1 (en) | 1998-12-29 | 2002-08-06 | Nortel Networks Limited | System using different tag protocol identifiers to distinguish between multiple virtual local area networks |
US6519231B1 (en) | 1999-01-12 | 2003-02-11 | Nortel Networks Limited | Method and apparatus providing a spanning tree protocol for a data communications network having a multi-link trunk |
US6502140B1 (en) | 1999-01-29 | 2002-12-31 | International Business Machines Corporation | Multicast support for small groups |
US6763469B1 (en) | 1999-03-03 | 2004-07-13 | Telecom Italia S.P.A. | Systems for local network security |
US6839348B2 (en) | 1999-04-30 | 2005-01-04 | Cisco Technology, Inc. | System and method for distributing multicasts in virtual local area networks |
US6829252B1 (en) | 1999-05-26 | 2004-12-07 | 3Com Corporation | Digital subscriber line access multiplexer for use with ethernet over VDSL transport facility |
US6798775B1 (en) | 1999-06-10 | 2004-09-28 | Cisco Technology, Inc. | Virtual LANs over a DLSw network |
US6882643B1 (en) | 1999-07-16 | 2005-04-19 | Nortel Networks Limited | Supporting multiple services in label switched networks |
US6693878B1 (en) | 1999-10-15 | 2004-02-17 | Cisco Technology, Inc. | Technique and apparatus for using node ID as virtual private network (VPN) identifiers |
US6611869B1 (en) | 1999-10-28 | 2003-08-26 | Networks Associates, Inc. | System and method for providing trustworthy network security concern communication in an active security management environment |
US6665273B1 (en) | 2000-01-11 | 2003-12-16 | Cisco Technology, Inc. | Dynamically adjusting multiprotocol label switching (MPLS) traffic engineering tunnel bandwidth |
US20030012183A1 (en) | 2000-02-11 | 2003-01-16 | David Butler | Methods and systems for creating, distributing and executing multimedia telecommunications applications over circuit and packet switched networks |
US6732189B1 (en) | 2000-03-20 | 2004-05-04 | International Business Machines Corporation | Method and apparatus for fault tolerant tunneling of multicast datagrams |
US20020032780A1 (en) | 2000-04-24 | 2002-03-14 | Microsoft Corporation | Systems and methods for uniquely and persistently identifying networks |
US20050163049A1 (en) | 2000-05-17 | 2005-07-28 | Takeki Yazaki | Packet shaper |
US6668282B1 (en) | 2000-08-02 | 2003-12-23 | International Business Machines Corporation | System and method to monitor and determine if an active IPSec tunnel has become disabled |
US6424657B1 (en) | 2000-08-10 | 2002-07-23 | Verizon Communications Inc. | Traffic queueing for remote terminal DSLAMs |
US20050157664A1 (en) | 2000-08-31 | 2005-07-21 | Baum Robert T. | Methods, apparatus and data structures for segmenting customers using at least a portion of a layer 2 address header or bits in the place of a layer 2 address header |
US7315554B2 (en) * | 2000-08-31 | 2008-01-01 | Verizon Communications Inc. | Simple peering in a transport network employing novel edge devices |
US6826698B1 (en) | 2000-09-15 | 2004-11-30 | Networks Associates Technology, Inc. | System, method and computer program product for rule based network security policies |
US7310342B2 (en) * | 2000-09-29 | 2007-12-18 | Dialogic Corporation | Auto ATM-VC detection for ATM network access devices |
US6850542B2 (en) | 2000-11-14 | 2005-02-01 | Broadcom Corporation | Linked network switch configuration |
US20020087721A1 (en) | 2000-12-28 | 2002-07-04 | Yoshikazu Sato | Duplicate private address translating system and duplicate address network system |
US7092389B2 (en) | 2001-01-30 | 2006-08-15 | At&T Corp. | Technique for ethernet access to packet-based services |
US6954436B1 (en) | 2001-02-28 | 2005-10-11 | Extreme Networks, Inc. | Method and apparatus for selecting redundant routers using tracking |
US20040102182A1 (en) | 2001-03-22 | 2004-05-27 | Lothar Reith | Method of providing networks services |
US20020156612A1 (en) * | 2001-04-20 | 2002-10-24 | Peter Schulter | Address resolution protocol system and method in a virtual network |
US20040141501A1 (en) * | 2001-06-15 | 2004-07-22 | Adams John L | Communications network |
US20020196795A1 (en) | 2001-06-22 | 2002-12-26 | Anritsu Corporation | Communication relay device with redundancy function for line in network in accordance with WAN environment and communication system using the same |
US20030036375A1 (en) | 2001-08-17 | 2003-02-20 | Weijing Chen | Public wireless local area network |
US7173934B2 (en) | 2001-09-10 | 2007-02-06 | Nortel Networks Limited | System, device, and method for improving communication network reliability using trunk splitting |
US7003102B2 (en) * | 2001-10-10 | 2006-02-21 | Pulse Engineering, Inc. | Telecommunications gateway and method |
US20030101243A1 (en) | 2001-11-27 | 2003-05-29 | Donahue David B. | System and method for automatic confuguration of a bi-directional IP communication device |
US20030110268A1 (en) | 2001-12-07 | 2003-06-12 | Francois Kermarec | Methods of establishing virtual circuits and of providing a virtual private network service through a shared network, and provider edge device for such network |
US7113512B1 (en) | 2001-12-12 | 2006-09-26 | At&T Corp. | Ethernet-to-ATM interworking technique |
US20030112781A1 (en) * | 2001-12-17 | 2003-06-19 | Kermode Roger George | Communications unit for secure communications |
US20030142674A1 (en) | 2002-01-30 | 2003-07-31 | Nortel Networks Limited | Label control method and apparatus for virtual private LAN segment networks |
US20030154259A1 (en) | 2002-02-08 | 2003-08-14 | Marc Lamberton | Method of providing a virtual private network service through a shared network, and provider edge device for such network |
US6789121B2 (en) | 2002-02-08 | 2004-09-07 | Nortel Networks Limited | Method of providing a virtual private network service through a shared network, and provider edge device for such network |
US6892309B2 (en) | 2002-02-08 | 2005-05-10 | Enterasys Networks, Inc. | Controlling usage of network resources by a user at the user's entry point to a communications network based on an identity of the user |
US20030177221A1 (en) | 2002-03-18 | 2003-09-18 | Hamid Ould-Brahim | Resource allocation using an auto-discovery mechanism for provider-provisioned layer-2 and layer-3 Virtual Private Networks |
US7116665B2 (en) | 2002-06-04 | 2006-10-03 | Fortinet, Inc. | Methods and systems for a distributed provider edge |
US6785265B2 (en) | 2002-07-08 | 2004-08-31 | Sbc Properties, L.P. | Ethernet-based digital subscriber line methods and systems |
US20040158735A1 (en) | 2002-10-17 | 2004-08-12 | Enterasys Networks, Inc. | System and method for IEEE 802.1X user authentication in a network entry device |
US20050190773A1 (en) | 2002-10-25 | 2005-09-01 | Huawei Technologies Co., Ltd. | Sub-rate transmission method for user data services in transmission devices of a metropolitan area network |
US7009983B2 (en) | 2002-11-05 | 2006-03-07 | Enterasys Networks, Inc. | Methods and apparatus for broadcast domain interworking |
US20040095940A1 (en) | 2002-11-15 | 2004-05-20 | Chin Yuan | Virtual interworking trunk interface and method of operating a universal virtual private network device |
US20040172559A1 (en) | 2002-11-26 | 2004-09-02 | Huawei Technologies Co., Ltd. | 802.1X protocol-based multicasting control method |
US20050175022A1 (en) | 2002-12-03 | 2005-08-11 | Fujitsu Limited | Bridge apparatus and logical queue control method |
US20040125809A1 (en) | 2002-12-31 | 2004-07-01 | Jeng Jack Ing | Ethernet interface over ATM Cell, UTOPIA xDSL in single and multiple channels converter/bridge on a single chip and method of operation |
US20040151180A1 (en) * | 2003-02-03 | 2004-08-05 | Sbc Properties, Lp | Enhanced H-VPLS service architecture using control word |
US6852542B2 (en) | 2003-02-03 | 2005-02-08 | Spectra Gases, Inc. | Method and system for creating a mercury halide standard for use in testing a mercury analyzer system |
US20040165525A1 (en) | 2003-02-10 | 2004-08-26 | Invensys Systems, Inc. | System and method for network redundancy |
US20040165600A1 (en) | 2003-02-21 | 2004-08-26 | Alcatel | Customer site bridged emulated LAN services via provider provisioned connections |
US7277936B2 (en) | 2003-03-03 | 2007-10-02 | Hewlett-Packard Development Company, L.P. | System using network topology to perform fault diagnosis to locate fault between monitoring and monitored devices based on reply from device at switching layer |
US20040213201A1 (en) * | 2003-04-28 | 2004-10-28 | Hakan Osterlund | Policy based media path selection in a broadband access network |
US20040233891A1 (en) | 2003-04-28 | 2004-11-25 | Alcatel Ip Networks, Inc. | Virtual private network fault tolerance |
US20040228291A1 (en) | 2003-05-15 | 2004-11-18 | Huslak Nicolas Steven | Videoconferencing using managed quality of service and/or bandwidth allocation in a regional/access network (RAN) |
US20050286503A1 (en) | 2003-05-27 | 2005-12-29 | Sotaro Oda | Communication device |
US7345991B1 (en) | 2003-05-28 | 2008-03-18 | Atrica Israel Ltd. | Connection protection mechanism for dual homed access, aggregation and customer edge devices |
US20040264364A1 (en) | 2003-06-27 | 2004-12-30 | Nec Corporation | Network system for building redundancy within groups |
US20050044265A1 (en) | 2003-07-04 | 2005-02-24 | France Telecom | Method for automatic configuration of an access router compatible with the DHCP protocol, for specific automatic processing of IP flows from a client terminal |
US20050007951A1 (en) | 2003-07-11 | 2005-01-13 | Roger Lapuh | Routed split multilink trunking |
US20050025143A1 (en) | 2003-07-29 | 2005-02-03 | Sbc Knowledge Ventures, L.P. | Broadband access for virtual private networks |
US20050030975A1 (en) | 2003-08-07 | 2005-02-10 | Bellsouth Intellectual Property Corporation | Methods and systems for providing network access service utilizing multiple asymmetric DSL modems per service point |
US20050049887A1 (en) * | 2003-08-29 | 2005-03-03 | Bulleit Douglas A. | Methods, systems, and computer program products for allocating costs in using a broadband communication network |
US20050063397A1 (en) | 2003-09-19 | 2005-03-24 | Cisco Technology, Inc. | Methods and apparatus for switching between Metro Ethernet networks and external networks |
US20050068972A1 (en) * | 2003-09-26 | 2005-03-31 | Burns Dave J. | Method and system for connection verification |
US20050152370A1 (en) | 2003-10-06 | 2005-07-14 | Meehan Thomas J. | Protocol for messaging between a centralized broadband remote aggregation server and other devices |
US20060092847A1 (en) * | 2003-11-10 | 2006-05-04 | Nortel Networks Limited | Method and apparatus for providing availability metrics for measurement and management of Ethernet services |
US20060182037A1 (en) | 2003-12-15 | 2006-08-17 | Sbc Knowledge Ventures, L.P. | System and method to provision MPLS/VPN network |
US20050157751A1 (en) | 2004-01-20 | 2005-07-21 | Sameh Rabie | Method and system for ethernet and frame relay network interworking |
US20050239445A1 (en) * | 2004-04-16 | 2005-10-27 | Jeyhan Karaoguz | Method and system for providing registration, authentication and access via broadband access gateway |
US20050232186A1 (en) * | 2004-04-16 | 2005-10-20 | Jeyhan Karaoguz | Method and system for extended network access services advertising via a broadband access gateway |
US20050232228A1 (en) * | 2004-04-16 | 2005-10-20 | Alcatel | Method and system configured for facilitating residential broadband service |
US20050249124A1 (en) * | 2004-05-10 | 2005-11-10 | Alcatel | Remote access link fault indication mechanism |
US20050265309A1 (en) * | 2004-05-25 | 2005-12-01 | Harshavardhan Parandekar | Local area network services in a cable modem network |
US20060007867A1 (en) * | 2004-07-08 | 2006-01-12 | Alcatel | Domain configuration in an ethernet OAM network having multiple levels |
US7408936B2 (en) | 2004-08-20 | 2008-08-05 | Alcatel Lucent | Scalable VLAN grouping in a provider Metro Ethernet |
US20060056414A1 (en) * | 2004-09-16 | 2006-03-16 | David Elie-Dit-Cosaque | System and method for securing an Ethernet connectivity fault management (CFM) domain defined on a VLAN |
US20060098607A1 (en) | 2004-10-28 | 2006-05-11 | Meshnetworks, Inc. | System and method to support multicast routing in large scale wireless mesh networks |
US20060153220A1 (en) * | 2004-12-22 | 2006-07-13 | Alcatel | System and method for reducing OAM frame leakage in an ethernet OAM domain |
US20060262794A1 (en) * | 2005-04-08 | 2006-11-23 | Interdigital Technology Corporation | Method and apparatus for transmitting concatenated frames in a wireless communication system |
US20060248277A1 (en) | 2005-04-29 | 2006-11-02 | Anand Pande | System, method, and apparatus for least recently used determination for caches |
US20060285500A1 (en) | 2005-06-15 | 2006-12-21 | Booth Earl H Iii | Method and apparatus for packet loss detection |
US20060285501A1 (en) * | 2005-06-17 | 2006-12-21 | Gerard Damm | Performance monitoring of frame transmission in data network oam protocols |
WO2007031002A1 (en) | 2005-09-15 | 2007-03-22 | Huawei Technologies Co., Ltd. | A method and apparatus for realizing the interworking of oam function between the ethernet and the mpls network |
WO2008089370A1 (en) | 2007-01-17 | 2008-07-24 | Nortel Networks Limited | Method and apparatus for interworking ethernet and mpls networks |
Non-Patent Citations (9)
Title |
---|
Blunk et al. Draft RFC 2284-Extensible Authentication Protocol EAP, Feb. 2004; http://tools.ietf.org/html/draft-ietf-eap-rfc2284bis-09. |
Lahti "Quality of Service in the Poin-to-Point Protocol over Ethernet" in: Google Scholar (on line, <URL:http://www.e.kth.se/~e95-pla/exjobb/doc/Lahti-Thesis-QoS-in-PPPoE.pdf>) Oct. 1, 2000. |
Lahti "Quality of Service in the Poin-to-Point Protocol over Ethernet" in: Google Scholar (on line, <URL:http://www.e.kth.se/˜e95—pla/exjobb/doc/Lahti—Thesis—QoS—in—PPPoE.pdf>) Oct. 1, 2000. |
Landron, Use of the IEEE Assigned Type Field with IEEE std 802.3, 1998 Edition Local and Metropolian Area Networks, Apr. 16, 2004 http://standards.ieee.org/regauth/ethertype/type-tut.html. |
Light Reading, Inc., Distributed-Edge Architecture, Nov. 25, 2003; http://www.lightreading.com/document.asp?site=lightreading&doc-id=43679&page-number=4. |
Marc Lasserre et al.,"Virtual Private LAN Services over MPLS", Mar. 2003, Internet Draft Document, pp. 4-22; http://tools.ietf.org/html/draft-lasserre-vkompella-ppvpn-vpls-04. |
Mike McFarland, Sr. Product Line Manager, "Metro Ethernet Will require New OAM Tools", pp. 1-5. |
Pseudo-Wire Edge-To Edge (PWE3) Working Group, Simon DeLord, Uecomm; Philippe Niger, France Telecom; Yuichi Ikejiri, Yuichiro Wada, NTT Debor: "PWE3 Applications & OAM Scenarios; draft-delord-pwe3-oam-applications 02.txt" Standard-Working-Draft, Internet Engineering Task Force, IETF, CH, No. 2, Oct. 1, 2005. |
XP015042128 ISSN: 0000-0004 abstract p. 10, paragraph 3 Section 3.1.1.1. on pp. 12-13; http://ftp.ist.utl.pt/pub/drafts/draft-delord-pwe3-oam-applications-02.txt. |
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US8184526B2 (en) * | 2008-09-15 | 2012-05-22 | Ciena Corporation | Systems and methods for Connectivity Fault Management extensions for automated activation of services through association of service related attributes |
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US8634306B2 (en) * | 2011-08-24 | 2014-01-21 | Fujitsu Limited | Systems and methods for implementing service operation, administration, and management for hairpinned ethernet services |
US9621581B2 (en) | 2013-03-15 | 2017-04-11 | Cisco Technology, Inc. | IPV6/IPV4 resolution-less forwarding up to a destination |
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